From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Miller <davem@davemloft.net>
Cc: mingo@elte.hu, a.p.zijlstra@chello.nl, efault@gmx.de,
elendil@planet.nl, parag.warudkar@gmail.com,
linux-kernel@vger.kernel.org, guichaz@yahoo.fr,
andi@firstfloor.org
Subject: Re: 'global' rq->clock
Date: Sun, 04 May 2008 08:30:55 +1000 [thread overview]
Message-ID: <1209853855.26383.28.camel@pasglop> (raw)
In-Reply-To: <20080503.122734.01023096.davem@davemloft.net>
On Sat, 2008-05-03 at 12:27 -0700, David Miller wrote:
> > ( although please note that the growing generalization that goes on
> > _did_ find a subtle nohz problem on sparc64 early in the merge
> window,
> > so it's not like these changes are totally useless to you. )
>
> Note that this bug theoretically exists on every platform,
> even x86, and only sparc64 is fixed at the moment by adding
> the irq_{entry,exit}() guards around all of it's IPI handlers.
What is the bug ?
IPIs on power are normal interrupts, so they do happen in irq_entry/exit
blocks but I'm curious to know what the root bug is :-)
Ben.
next prev parent reply other threads:[~2008-05-03 22:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-02 0:14 Horrendous Audio Stutter - current git Parag Warudkar
2008-05-02 8:34 ` Peter Zijlstra
2008-05-02 10:32 ` Frans Pop
2008-05-02 10:35 ` Peter Zijlstra
2008-05-02 11:08 ` Peter Zijlstra
2008-05-02 11:37 ` Frans Pop
2008-05-02 11:39 ` Peter Zijlstra
2008-05-02 11:45 ` Frans Pop
2008-05-02 11:51 ` Peter Zijlstra
2008-05-02 12:06 ` Frans Pop
2008-05-02 12:22 ` Parag Warudkar
2008-05-02 13:21 ` Dhaval Giani
2008-05-02 11:10 ` Parag Warudkar
2008-05-02 12:09 ` Mike Galbraith
2008-05-02 12:21 ` Parag Warudkar
2008-05-02 12:37 ` Mike Galbraith
2008-05-02 15:02 ` Mike Galbraith
2008-05-02 15:49 ` Frans Pop
2008-05-02 18:53 ` Frans Pop
2008-05-02 19:27 ` Mike Galbraith
2008-05-02 19:56 ` 'global' rq->clock (was Re: Horrendous Audio Stutter - current git) Peter Zijlstra
2008-05-02 20:38 ` Guillaume Chazarain
2008-05-02 20:46 ` Peter Zijlstra
2008-05-02 22:00 ` 'global' rq->clock David Miller
2008-05-02 21:48 ` David Miller
2008-05-02 10:09 ` Arjan van de Ven
2008-05-04 12:12 ` Peter Zijlstra
2008-05-02 22:07 ` Peter Zijlstra
2008-05-03 8:28 ` Ingo Molnar
2008-05-03 9:05 ` David Miller
2008-05-03 10:10 ` Ingo Molnar
2008-05-03 19:27 ` David Miller
2008-05-03 19:37 ` Ingo Molnar
2008-05-03 22:30 ` Benjamin Herrenschmidt [this message]
2008-05-03 22:38 ` Ingo Molnar
2008-05-03 23:04 ` David Miller
2008-05-03 23:36 ` David Miller
2008-05-03 23:38 ` Ingo Molnar
2008-05-03 23:40 ` David Miller
2008-05-03 23:47 ` Ingo Molnar
2008-05-04 2:22 ` Benjamin Herrenschmidt
2008-05-03 19:28 ` David Miller
2008-05-03 19:39 ` Ingo Molnar
2008-05-03 6:20 ` 'global' rq->clock (was Re: Horrendous Audio Stutter - current git) Mike Galbraith
2008-05-02 19:38 ` Horrendous Audio Stutter - current git Mike Galbraith
2008-05-03 7:13 ` Frans Pop
2008-05-03 7:39 ` Mike Galbraith
2008-05-07 8:26 ` Frans Pop
2008-05-07 8:32 ` Ingo Molnar
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